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gogolik [260]
3 years ago
14

A number in scientific notation will have a____ exponent when it is less than 1 (A) negative (B) reduced (C) positive (please an

swer)
Mathematics
1 answer:
castortr0y [4]3 years ago
7 0

Answer:

Negative.

Step-by-step explanation:

A negative exponent.  For example, 0.025 in scientific notation is 2.5*10^-2.

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So the car is moving at 651 revolutions per minute, with wheels of a radius of 18inches

so, one revolution, is just one go-around a circle, and thus 2π, 651 revolutions is just 2π * 651, or 1302π, the wheels are moving at that "angular velocity"

now, what's the linear velocity, namely, the arc covered per minute

well   \bf v=rw\qquad 
\begin{cases}
v=\textit{linear velocity}\\
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w=\textit{angular velocity}\\
----------\\
r=18in\\
w=1302\frac{\pi }{min}
\end{cases}\implies v=18in\cdot \cfrac{1302\pi }{min}
\\\\\\
v=\cfrac{23436\pi\ in}{min}

now, how much is that in miles/hrs?  well
let's keep in mind that, there are 12inches in 1foot, and 5280ft in 1mile, whilst 60mins in 1hr

thus   \bf \cfrac{23436\pi\ in}{min}\cdot \cfrac{ft}{12in}\cdot \cfrac{mi}{5280ft}\cdot \cfrac{60min}{hr}\implies \cfrac{23436\cdot \pi \cdot 60\ mi}{12\cdot 5280\ hr}

notice, after all the units cancellations, you're only left with mi/hrs
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2 years ago
Which of the following numbers is a multiple of 8? A.98 B.124 C.512 D.27
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C is your answer buddy brainliest please
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Answer:

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